We call it the "nervous p$ss" ... There is one guy spotting for me in my club who would reach over a turn off my beeping talking timer while i was on final thinking it would be better to shut the darn thing off. I told him its just the opposite, leave it beeping because that tunes out the rest of the chatter going on around me and lets me concentrate more !! ha !! Its sort of like reading a book and listening to your ipod at the same time.
V..